code: def _bdecode(s):
      """Decodes a base64 string.
  
      This function is equivalent to base64.decodestring and it's retained only
      for backward compatibility. It used to remove the last \\n of the decoded
      string, if it had any (see issue 7143).
      """
      if not s:
          return s
      return base64.decodestring(s)
  
imports: import os
  import re
  import time
  import base64
  import random
  import socket
  import urllib
  import warnings
  from email._parseaddr import quote
  from email._parseaddr import AddressList
  from email._parseaddr import mktime_tz
  from email._parseaddr import parsedate
  from email._parseaddr import parsedate_tz
  from quopri import decodestring
  from email.encoders import _bencode, _qencode
label_desc: Use image node_id 2 for calling a global function with example usage: _bdecode(s) and returns: base64, s